Anyone know a good source to purchase a H pipe for the exhaust? I want to replace the centre muffler and prefer to not have a local muffler shop make one from scratch. Milltek, and other suppliers, will not part with the H pipe alone unless the entire exhaust system is purchased. Can't blame them as they put alot of R & D into their products.

 

For what it's worth, after pricing out what's available on the net, I fishmouthed a piece of exhaust tubing and had it welded in between the two straight pipes. Works very well to balance the system. Very little cost. I think it was magnaflow amongst others that makes them. Google. Good luck.

 

Magnaflo makes a "H" pipe muffler, but they are reputed to be loud. Dynomax also makes one, which is bigger and perhaps more quiet. Prices are reasonable.

 

While you are on the subject of exhaust; is it true the the entire jag exhaust sytem is made of stainless steel?

 

I also had one made from 2 straight pipes.. installed for $35!! I know I could have paid 4 times that with and H or X pipe but I think the guy who did this was fantastic and made it look close to a factory job. Sounds great!!!

 

Not true.

 

I'm curious why you don't want the muffler shop to make one from scratch. There isn't a whole lot to an H-pipe (compared to say a X-pipe or ProChamber) and a custom job is probably cheaper and easier for a shop to do. Here is what I did (although I did the entire system, you could just do the H): https://www.jaguarforums.com/forum/s...ad.php?t=37811

 

If I could purchase a bolt on H pipe I would do it myself. That is my reasoning. Although the job your muffler shop did looks amazing.

 

use a X pipe instead, the benefits are better than an H pipe. Thats why Nascar uses them among others. Magnaflo makes a X pipe to slip on or weld on. ANd yes the exhaust is stainless Rev what makes you think its not?

 

I agree 100%.They can build you any type of system that you want.Any size piping.Bring in your own Stainless steel pipe if you have some?Bring in your own special mufflers if you have such.But I would go with them.They will build it to fit the car.A lot of time you can buy a H pipe system and have to go in to them to have it altered to clear linkage or?

 

I have done a lot of exhaust R&D on the XK and I can tell you a H pipe will sound better but an X pipe will give you more power, we are not talking about alot here just a few BHP, I always prefered the balance pipe (H) idea over the X but dyno's have prooved otherwise. Either is very easy to make, I would even go as far to say if you have a MIG welder you could do it yourself with just some pipe, making it all up in situ going with the H idea would be childs play!



And I agree with Brutal the OE system is all stainless but the tubing is poor quality and will still rust!

 

Because I was under the car looking at it earlier this week and there was rust on it.

 

I like the balance and sound from the x pipe,you can get a nice one from Magnaflo for less than $75.I had my local shop cut out the center muffler and weld in the x pipe,I also had them remove the rear mufflers but keep the ones that are in the back side. The sound of the new system is awesome!
http://www.amazon.com/MagnaFlow-1079.../dp/B000CCDNSW

 

Rev, as an engineer you should know that there are different grades of stainless steel,and some will have different corrosion levels.Remember the reasons for specing 316 over 304 SS enclosures? Attached is some fun reading.


http://www.corrosionist.com/Stainless_Steel_grades.htm

 

its just depends on the amount of ferrous metalor grade, a magnet sticks to it so its got some iron but compared to a true steel, its great and rust prevention. We can always spot nothern market or beach car depending on how much rust the exhaust has. otherwise we dont see any here in Houston

 

Does the existing centre muffler act like a H pipe but with a lower noise? If it balances the exhaust pulses between the two banks and scavenges the exhaust more efficiently I may look at just going with straight through pipes after the centre muffler. By getting rid of the four rear mufflers how noisy can the exhaust be?

 

Good question. I have high flow cats and the Mina rear pipes and mufflers, with the stock dual center muffler. I really was wondering if the X or H would buy me anything significant.

 

Done that recently....Adamesh now do a set up which replaces the 4 rear boxes ( 2 silencer and 2 resonator boxes) with straight through pipes, this also does away with the squashed section just before the rear cage...

Sounded pretty good you do get a slight amount of resonation around 1500 rpm but nothing to write home about,

 

We didn't really cover metallurgy in electrical engineering school. However, I was under the car again today and I noticed that the rust was just little specs scattered all over the exhaust. I guess if it wasn't stainless it would be completely covered with rust. I was kinda expecting stainless steel to be all silvery and shiny. Shows you what I know...

 

Eaglexkr - I had a magnaflow X-pipe installed, but left the other 4 factory cans in the system. I really don't like it much: Not much louder and it has a drone/buzzing sound around 1500 - 2000 RPM. Do you get that having removed the cans forward of the axle? Did you have new pipes made to go over the axles? I wonder if there's much difference between what you've done and using Flowmasters. It's too bad one can't really hear what an exhaust system will sound like until after it is installed. On-line videos just don't do it for me.

I'm trying to find a good solution without springing for the whole MacLeod deal. I'd like it to sound more civilized than my solid-lifter Corvette LT-1 (which my wife doesn't even like to ride in) but I don't want it to be too wimpy. The Mina system is probably good, but I just don't like the looks of their tips. I really prefer having an oval with a rolled edge. It looks like Mina's tips are welded on and close to the mufflers so it would be a hassle to change them. Sigh - someday I'll find the right setup.